Preheat oven to 350.
Sift flour, add baking powder, soda, salt, and sift again, set aside.
Cream shortening and add sugar gradually. Continue beating until light and fluffy.
Add eggs and mix until smooth.
Add dry ingredients alternately with mashed bananas. Stir just enough to combine thoroughly- do not beat.
Pour into greased loaf pan(s). 5 small, 2 medium, 1 large.
Bake small - 30-35 minutes medium- 45-50 minutes large- 60-70 minutes